You will need to sign a release form. Then they have 30 days to send your records. It would be faster if you signed the form at your new OB's office and they faxed it to your old doc. Just call the new OB and tell them what's up, you aren't the first person to switch!

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Sent from my phone. Please excuse typos.

Yep it can take 30 days for records. I'm surprised your new ob won't just make the appointment. You shouldn't be going without prenatal care.